稠油破乳剂P(AM/DMC)的合成及性能研究

Synthesis and properties of heavy oil demulsifier P(AM/DMC)

采用氧化还原引发剂过硫酸铵/亚硫酸氢钠,以丙烯酰胺和甲基丙烯酰氧乙基三甲基氯化铵为合成单体,通过自由基聚合合成了稠油破乳剂丙烯酰胺/甲基丙烯酰氧乙基三甲基氯化铵(O/W破乳剂),并用红外光谱和核磁共振氢谱对其结构进行了表征.采用正交设计实验考察了反应温度、时间、引发剂用量、单体质量分数对转化率的影响.研究结果表明,当反应温度为65℃,反应时间为6h,引发剂用量为1.3%,单体质量分数为35%时,转化率最高为93.6%.性能测试表明,在适宜的破乳条件下,O/W破乳剂的脱水率达到71.2%,破乳性能优于工业用的OX-932破乳剂,自制O/W破乳剂对胜利油田孤东稠油具有良好的破乳效果.

Redox initiator ammonium persulfate/sodium bisulfate ,acrylamide and methacrylo‐yloxyethyl trimethyl ammonium chloride are synthetic monomers synthesized by free radical polymerization of acrylamide/methacryloyloxyethyl trimethyl ammonium chloride heavy oil demulsifier （oil‐in‐water demulsifier ） ,and were characterized by infrared spectroscopy and nuclear magnetic resonance spectroscopy its structure .Orthogonal experimental design of re‐action temperature , reaction time ,initiator concentration , monomer concentration on the conversion rate .The results show that when the reaction temperature is 65 ℃ ,reaction time is 5 h ,initiator dosage is 1 .1% ,monomer concentration is 35% ,the conversion rate of up to 93 .6% .Performance tests show that under the appropriate condition of demulsification ,the dehydration rate of O/W demulsifier is 71 .2% .The performances of the O/W demulsifier were superior to those of an industrial demulsifier OX‐932 .The O/W demulsifier towards Shengli oilfield Gudong heavy oil has good breaking results .